What is an analogy for the nerves in a human body and electric wires?

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Electrical wires transmit electrical currents (electrons) along the wire and are encased in a insulated jacket that keeps the wires from short circuiting with neighboring wires so the electrical current can travel quickly and efficiently along the wire.
Nerves resemble these wires in that the axons of the nerve fibers are similar looking as they are enclosed in a myelinated sheath. Nuerons do not transmit electrical currents, but rather they transmit charged ions.

Nucleus is to the brain. Endoplasmic Reticulum is to nerves. Mitochondria is to the small intestine. Lysosome is to stomach. Gogli Body is to large intestine. Vacuol…e is to body fat. Cytoplasm is to body cavities. Cell Membrane is to skin.

A nerve is a bundle of individual neurons. There are approximately100 billion neurons in the human body (about the same number ofstars in our Milky Way galaxy), but there are …only 214 nerves inthe human body.

There are many many millions of nerves, each one is a single cell but these are more correctly termed neurons. It is estimated that there are up to 100 billion neurons in the …human brain. It is likely that there are more neurons in the human body than any other cell type. There are also the main named 'nerves'. These are the collections of individual cells that all follow the same anatomic route through the body (within a single connective tissue pipe or sheath); for example the sciatic nerve and the radial nerve. There are three main types of nerves and, according to Wikipedia, 214 named nerves. Allowing for bilateral symmetry one could expect the answer to your question to be 428. However there are many unnamed nerves, such as those that run to small sensors in the skin or the periosteum, and many that are repeated many more times than twice (the intercostal nerve for example). So the answer in fact must be that there are many thousands, but quite possibly millions, of bundles neurons. It is said that there are enough nerves in the human body that if all the other cells were somehow removed the network of fine nerves would be numerous enough to enable you to easily recognize the individual concerned and to recognize every tissue layer in his or her body.